Source of file CRTV.php

<?php

namespace AudioDidact\SupportedSites;

use AudioDidact\Video;

/**

 * Class CRTV

 */

class CRTV extends SupportedSite {

	// Setup global variables

	private $thumbnailURL;

	/**

	 * CRTV constructor. Gets the video information, checks for it in the user's feed.

	 *

	 * @param string $str

	 * @param boolean $downloadVideo

	 * @throws \Exception

	 */

	public function __construct($str, $downloadVideo){

		$this->video = new Video();

		// If there is a URL/ID, continue

		if($str != null){

			$this->video->setURL($str);

			$this->video->setIsVideo($downloadVideo);

			// Set video ID and time to current time

			$info = $this->getVideoInfo($str);

			$this->video->setId($info["ID"]);

			$this->video->setFilename($this->video->getId());

			$this->video->setThumbnailFilename($this->video->getFilename() . ".jpg");

			$this->video->setTime(time());

			$this->video->setTitle($info["title"]);

			$this->video->setAuthor("CRTV");

			$this->video->setDesc($info["description"]);

		}

	}

	/**

	 * @param $str

	 * @return array

	 * @throws \Exception

	 */

	private function getVideoInfo($str){

		// Download CRTV video page

		$crtvHTML = file_get_contents($str);

		$videoJSON = [];

		$vidFound = mb_eregi("var\s+video\s*=\s*({[^}]*});", $crtvHTML, $videoJSON);

		if($vidFound == false || count($videoJSON) != 2){

			throw new \Exception("Unable to find JSON for that video.");

		}

		$videoJSON = mb_eregi_replace("(\w+):\s*\"", "\"\\1\":\"", $videoJSON[1]);

		$videoInfo = json_decode($videoJSON, true);

		$this->thumbnailURL = $videoInfo["image"];

		return ["ID" => $videoInfo["id"], "title" => $videoInfo["name"], "description" => $videoInfo["description"]];

	}

	/**

	 * Download thumbnail using videoID from Brightcove

	 */

	public function downloadThumbnail(){

		$path = getcwd() . DIRECTORY_SEPARATOR . DOWNLOAD_PATH . DIRECTORY_SEPARATOR;

		$thumbnail = $path . $this->video->getThumbnailFilename();

		file_put_contents($thumbnail, fopen($this->thumbnailURL, "r"));

		// Set the thumbnail file as publicly accessible

		@chmod($thumbnail, 0775);

	}

	public function downloadVideo(){

		$path = getcwd() . DIRECTORY_SEPARATOR . DOWNLOAD_PATH . DIRECTORY_SEPARATOR;

		$videoFilename = $this->video->getFilename() . ".mp4";

		$videoPath = $path . $videoFilename;

		$m3u8URL = $this->getM3U8Playlist($this->video->getId());

		$cmd = "ffmpeg -i \"" . $m3u8URL . "\" -map 0:p:0 -y -c copy -bsf:a aac_adtstoasc \"" . $videoPath . "\" > "

			. $this->video->getID() . ".txt 2>&1";

		// Check if we're on Windows or *nix

		if(strtoupper(mb_substr(PHP_OS, 0, 3)) === 'WIN'){

			// Start the command in the background

			pclose(popen("start /B " . $cmd, "r"));

		}

		else{

			pclose(popen($cmd . " &", "r"));

		}

		$progress = 0;

		// Get the download and conversion progress and output the progress to the UI using a JSON array

		while($progress != 100){

			$content = @file_get_contents($this->video->getID() . '.txt');

			// Get the total duration of the file

			preg_match("/Duration: (.*?), start:/", $content, $matches);

			// If there is no match, then wait and continue

			if(!isset($matches[1])){

				usleep(500000);

				continue;

			}

			$rawDuration = $matches[1];

			$ar = array_reverse(explode(":", $rawDuration));

			$duration = floatval($ar[0]);

			if(!empty($ar[1])){

				$duration += intval($ar[1]) * 60;

			}

			if(!empty($ar[2])){

				$duration += intval($ar[2]) * 60 * 60;

			}

			preg_match_all("/time=(.*?) bitrate/", $content, $matches);

			// Matches time of the converted file and gets the percentage complete

			$rawTime = array_pop($matches);

			if(is_array($rawTime)){

				$rawTime = array_pop($rawTime);

			}

			$ar = array_reverse(explode(":", $rawTime));

			$time = floatval($ar[0]);

			if(!empty($ar[1])){

				$time += intval($ar[1]) * 60;

			}

			if(!empty($ar[2])){

				$time += intval($ar[2]) * 60 * 60;

			}

			$progress = round(($time / $duration) * 100);

			// Send progress to UI

			$response = ['stage' => 0, 'progress' => $progress];

			echo json_encode($response);

			usleep(500000);

		}

		// Delete the temporary file that contained the ffmpeg output

		@unlink($this->video->getID() . ".txt");

		$this->video->setDuration(SupportedSite::getDurationSeconds($videoPath));

	}

	public static function supportsURL($url){

		if(empty(SUPPORTED_SITES_CRTV)){

			return false;

		}

		return mb_strpos($url, "crtv.com") > -1;

	}

	private function getM3U8Playlist($getId){

		$ch = curl_init();

		$formParams = ["id" => $getId, "format" => "json", "type" => "video"];

		curl_setopt_array($ch, [

			CURLOPT_URL => "https://www.crtv.com/service/publishpoint",

			CURLOPT_RETURNTRANSFER => true,

			CURLOPT_SSL_VERIFYPEER => false,

			CURLOPT_SSL_VERIFYHOST => false,

			CURLOPT_CUSTOMREQUEST => "POST",

			CURLOPT_POSTFIELDS => http_build_query($formParams),

			CURLOPT_HTTPHEADER => [

				"cache-control: no-cache",

				"content-type: application/x-www-form-urlencoded",

				"origin: https://neulionms-a.akamaihd.net",

				"cookie: nllinktoken=" . SUPPORTED_SITES_CRTV

			],

		]);

		$response = curl_exec($ch);

		curl_close($ch);

		return json_decode($response, true)["path"];

	}

}